Comment the ray tracing loop

src/camera.c

@@ -96,7 +96,7 @@ Ray ray_through_screen_at(float px, float py, float aspect_ratio)
 {
 	assert(!isnan(aspect_ratio));
 
-	Vector3 w = normalize(scale(camera_front, -1));
+	Vector3 w = normalize(scalev(camera_front, -1));
 	Vector3 u = normalize(cross(camera_up, w));
 	Vector3 v = cross(w, u);
 
@@ -109,8 +109,8 @@ Ray ray_through_screen_at(float px, float py, float aspect_ratio)
 	assert(!isnan(screen_h));
 	assert(!isnan(screen_w));
 
-	Vector3 horizontal = scale(u, screen_w);
-	Vector3 vertical   = scale(v, screen_h);
+	Vector3 horizontal = scalev(u, screen_w);
+	Vector3 vertical   = scalev(v, screen_h);
 
 	assert(!isnanv(horizontal));
 	assert(!isnanv(vertical));